Why barf? Streep is a superb actress. Give her a good script, and none would do better. But will the script be good?
Do you honestly think Meryl Streep would attach herself to a movie that was going to be fair and even-handed to one of the 20th century's greatest conservative icons? Come on.
Meryl Streep hates conservatives with the burning passion of a white-hot sun. It doesn't take a Hollywood insider to understand that this will be a hit-piece.